pyqt5 mediaplayer播放音乐没声音，哪里错了？

按下按钮，没有报错，但是没有声音

from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
from PyQt5.QtCore import QUrl, Qt
from PyQt5.QtWidgets import QGridLayout
import sys


class MainUi(QtWidgets.QMainWindow):

    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        button1 = QtWidgets.QPushButton("button1",self)
        button1.clicked.connect(self.playmusic)


    def playmusic(self):
        url = QUrl.fromLocalFile(r"D:\four\CS003\project\music\Stay.mp3")
        content = QtMultimedia.QMediaContent(url)
        player = QtMultimedia.QMediaPlayer()
        player.setMedia(content)
        player.setVolume(100)
        player.play()


def main():
    app = QtWidgets.QApplication(sys.argv)
    gui = MainUi()
    gui.show()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

只要改动你代码中的这行就行了，player = QtMultimedia.QMediaPlayer(self)，你少个self

或者你把player作为实例的对象，前面加self, 像2楼一样改。

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from PyQt5 import QtCore, QtGui, QtWidgets, QtMultimedia
from PyQt5.QtCore import QUrl, Qt
from PyQt5.QtWidgets import QGridLayout
import sys


class MainUi(QtWidgets.QMainWindow):

    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        button1 = QtWidgets.QPushButton("button1",self)
        button1.clicked.connect(self.playmusic)
        url = QUrl.fromLocalFile(r"D:\four\CS003\project\music\Stay.mp3")
        content = QtMultimedia.QMediaContent(url)
        self.player = QtMultimedia.QMediaPlayer()
        self.player.setMedia(content)
        button1.clicked.connect(self.playmusic)

    def playmusic(self):
        self.player.play()


def main():
    app = QtWidgets.QApplication(sys.argv)
    gui = MainUi()
    gui.show()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()

https://blog.csdn.net/huazwz/article/details/80505091